package com.atguigu.tingshu.album.service.impl;

import com.alibaba.fastjson.JSONObject;
import com.atguigu.tingshu.album.mapper.*;
import com.atguigu.tingshu.album.service.BaseCategoryService;
import com.atguigu.tingshu.model.album.BaseAttribute;
import com.atguigu.tingshu.model.album.BaseCategory1;
import com.atguigu.tingshu.model.album.BaseCategoryView;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Service
@SuppressWarnings({"all"})
public class BaseCategoryServiceImpl extends ServiceImpl<BaseCategory1Mapper, BaseCategory1> implements BaseCategoryService {

	@Autowired
	private BaseCategory1Mapper baseCategory1Mapper;

	@Autowired
	private BaseCategory2Mapper baseCategory2Mapper;

	@Autowired
	private BaseCategory3Mapper baseCategory3Mapper;


	@Autowired
	private BaseCategoryViewMapper baseCategoryViewMapper;

	@Autowired
	private BaseAttributeMapper baseAttributeMapper;


	@Override
	public List<BaseAttribute> findAttributeByCategory1Id(Long category1Id) {
		//	调用mapper层方法
		return baseAttributeMapper.selectBaseAttributeList(category1Id);
	}

	@Override
	public List<JSONObject> getBaseCategoryList() {
		//	创建集合对象
		List<JSONObject> list = new ArrayList<>();
		//	查看所有分类数据
		List<BaseCategoryView> baseCategoryViewList = baseCategoryViewMapper.selectList(null);
		//	按照一级分类Id 进行分组 key:一级分类Id， value:一级分类Id 对应的集合数据
		Map<Long, List<BaseCategoryView>> map = baseCategoryViewList.stream().collect(Collectors.groupingBy(BaseCategoryView::getCategory1Id));
		//	循环遍历数据
		for (Map.Entry<Long, List<BaseCategoryView>> entry : map.entrySet()) {
			//	获取到一级分类Id
			Long category1Id = entry.getKey();
			//	获取到一级分类Id 对应的集合数据
			List<BaseCategoryView> category1ViewList = entry.getValue();
			// 声明一级分类对象
			JSONObject category1 = new JSONObject();
			category1.put("categoryId", category1Id);
			category1.put("categoryName", category1ViewList.get(0).getCategory1Name());

			//	按照二级分类Id 进行分组
			Map<Long, List<BaseCategoryView>> map2 = category1ViewList.stream().collect(Collectors.groupingBy(BaseCategoryView::getCategory2Id));
			// 声明二级分类对象集合
			List<JSONObject> category2Child = new ArrayList<>();
			//	循环遍历
			for (Map.Entry<Long, List<BaseCategoryView>> entry2 : map2.entrySet()) {
				//	获取到二级分类Id
				Long category2Id = entry2.getKey();
				//	获取到二级分类Id 对应的集合数据
				List<BaseCategoryView> category2ViewList = entry2.getValue();
				//	创建二级分类对象
				JSONObject category2 = new JSONObject();
				category2.put("categoryId",category2Id);
				category2.put("categoryName",category2ViewList.get(0).getCategory2Name());

				// 循环三级分类数据
				List<JSONObject> category3Child = category2ViewList.stream().map(baseCategoryView -> {
					JSONObject category3 = new JSONObject();
					category3.put("categoryId", baseCategoryView.getCategory3Id());
					category3.put("categoryName", baseCategoryView.getCategory3Name());
					return category3;
				}).collect(Collectors.toList());
				// 将三级数据放入二级里面
				category2.put("categoryChild", category3Child);
				//	将二级分类对象添加到集合中
				category2Child.add(category2);
			}
			// 将三级数据放入二级里面
			category1.put("categoryChild", category2Child);
			//	将一级分类数据放入到集合中。
			list.add(category1);
		}
		return list;
	}
}
